南方地区草鱼养殖用药分析自１９７１年草鱼“三病”人工免疫法首先在广东顺德、中山等市、县开展以来，草鱼成鱼养殖获得了很大的成功。经注射疫苗的草鱼成鱼成活率相当高。可许多地方草鱼种的出塘率却相当低，严重制约了生产的发展。经本人观察、分析，主要有以下两方面... Southern grass carp aquaculture drug analysis Since 1971, grass carp “three diseases” artificial immune first in Guangdong Shunde, Zhongshan and other cities and counties since the grass carp fish farming has been a great success. Survival rate of adult grass carp fed with vaccine is quite high. In many places, however, the rate of grass carp production is rather low, severely restricting the development of production. After I observe, analyze, mainly in the following two aspects ...